Christopher Scott Blatt

US Patent:

6435224, Aug 20, 2002

Filed:

Aug 2, 2001

Appl. No.:

09/921452

Inventors:

Christopher S. Blatt - San Diego CA
Richard H. Pearce - Cocoa FL
Graham Williams - Bromborough, GB

Assignee:

Arch Specialty Chemicals, Inc. - Norwalk CT

International Classification:

F17C 1300

US Classification:

141 21, 141 5, 141 1, 141 67, 141 95, 141198, 137209

Abstract:

A highly reliable and safe, modular automatic refill (bulk delivery) system for ultra-high purity pyrophoric metalorganic chemicals employing: a manifold that insures contamination-free operation; a liquid-level detection system with fail-safe redundancy; and an evacuation system which leaves the systems manifold and transfer lines relatively free of chemical fire hazards; leaves them free of oxygen contamination; and leaves the composition of the systems carrier gas unaffected, between refills.

US Patent:

6604555, Aug 12, 2003

Filed:

Aug 2, 2002

Appl. No.:

10/211940

Inventors:

Christopher S. Blatt - San Diego CA
Richard H. Pearce - Cocoa FL
Graham Williams - Bromborough, GB

Assignee:

Arch Specialty Chemicals, Inc. - Norwalk CT

International Classification:

F17C 1300

US Classification:

141 21, 141 1, 141 5, 141 67, 141 95, 141198, 137209

Abstract:

A highly reliable and safe, modular automatic refill (bulk delivery) system for ultra-high purity pyrophoric metalorganic chemicals employing: a manifold that insures contamination-free operation; a liquid-level detection system with fail-safe redundancy; and an evacuation system which leaves the systems manifold and transfer lines relatively free of chemical fire hazards; leaves them free of oxygen contamination; and leaves the composition of the systems carrier gas unaffected, between refills.

US Patent:

58689060, Feb 9, 1999

Filed:

Aug 2, 1996

Appl. No.:

8/691427

Inventors:

John A. Adams - Escondido CA
Gerald A. Krulik - San Clemente CA
Christopher Blatt - La Costa CA
David Persichini - Oceanside CA

Assignee:

Athens Corporation - Oceanside CA

International Classification:

B01D 300

US Classification:

203 18

Abstract:

A method for the on-site reprocessing of isopropyl alcohol used in semiconductor manufacturing, to generate an ultradry and ultrapure isopropyl alcohol. This ultradry and ultrapure isopropyl alcohol is produced through a pervaporation step, followed by double distillation. In the first distillation step, an autonomous azeotropic self-stripping distillation column is used to produce an ultradry and partially purified isopropyl alcohol. In the next step, the isopropyl alcohol is distilled in an overhead product distillation column, to produce an ultrapure and ultradry isopropyl alcohol. Alternatively, if the feed isopropyl alcohol contains less than 2000 ppm water, the pervaporation step may be omitted. The resulting isopropyl alcohol has between a high of 100 parts per million (ppm) and a low of 0. 1 ppm of water in the isopropyl alcohol.

US Patent:

55000959, Mar 19, 1996

Filed:

Apr 8, 1994

Appl. No.:

8/224956

Inventors:

Robert T. Shinagawa - Encinitas CA
Susan M. Jordan - Danville CA
Christopher S. Blatt - La Costa CA

Assignee:

Athens Corporation - Oceanside CA

International Classification:

B01D 342
C01B 1790

US Classification:

203 2

Abstract:

A high efficiency batch sulfuric acid reprocessor system that is capable of producing high purity acid through distillation. Methods of use are also provided. The distillation is monitored and controlled in accordance with temperatures of the system, in particular, the temperature of the column and the temperature of the vapor in a condensing chamber. A stream splitter enables the invention to selectively collect high purity product as well as remove waste or recycle condensate as reflux.